Forest Control by Continuous Inventory

FOREST CONTROL k

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CONTINUOUS INVENTORY

"Today I have grovn taller from walking
with the trees."

Milwaukee, Wifi. December, 1Q6U No. 1PQ

DECEMBER IS FOR THE CHILDREN

If I could find a higher tree
Farther and farther I should see
To where the grown-up river slips
Into the sea among the ships.

Where all the roads on either hand
Lead onward into fairy land.
Where all the children dine at five
And all the playthings come alive.

ROBERT LOUIS STEVENSON

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12/14/64

THE REGION COMPILES AN INTERNATIONAL LOG SCALE
LOOK-UP VOLUME TABLE

CFI Letter No. 123, with its Scribner Table of Volumes, now has a
companion letter containing an International Volume Table. Similar in
every detail of arrangement to the previous tabulation, this one has
similar uses and purposes,

Basic machine work for the detailed figures was done by Bruce Bare on
the l620 at the Purdue University School of Forestry and Conservation.
Tom Jones’ volume formula in CFI letter No. 98 was used for the
calculations.

These Look-Up Volume Tables have been found more useful than I first
thought they might. They not only can be used for checking machine
calculated volumes in CFI cases, and preparing test decks for computing,
but for other mensuration techniques as well.

We have used the Look-Up Volume Tables in the study of individual trees
in CFI plots. Every combination of sawlog length and diameter breast
high, in small class intervals, is included in the tabulation and it
is a simple matter to run down the tree volume. It is possible to check
the standing tree volume against the accumulated volumes of the separate
logs in the tree. This is useful in determining growth by grade and
value in standing trees and information of this nature is now being
prepared for CFI training school use.

Young cruisers carrying these booklets in their packs, and referring
to them occasionally, will quickly come to learn the actual volume of
standing trees. They will better understand the Importance of minor
diameter and length changes. They will begin to see trees in terms
of content rather than exterior dimension. The tables thus have
inherent pedagogic qualities the application of which should be
encouraged in cruising.

CAL STOTT
Forester